Arqit Quantum Inc. - Insider Ownership Filing

This filing details the ownership of Arqit Quantum Inc. (ARQQ) by its Chief Operating Officer, Ben Simon. The filing, dated March 18, 2026, indicates direct ownership of 2368.47 ordinary shares. Additionally, it reports holdings in Restricted Stock Units (RSUs) which represent contingent rights to receive ARQQ ordinary shares. There are two sets of RSUs detailed: one set vests quarterly on April 1, July 1, October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, totaling 5831 shares. The second set vests quarterly on April 1, July 1, October 1, 2026, January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028, totaling 5500 shares. The reporting person is exempt from certain SEC reporting requirements due to the issuer's status as a foreign private issuer.